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Letter about perpetual motion
Letter about perpetual motion
Letter from James McCan about a plan for a perpetual motion
Letter from James McCan about a plan for a perpetual motion
Letter from William Herbert about a perpetual motion machine
Letter from William Herbert about a perpetual motion machine
Letter from Robert Dawson to Sir Joseph Banks about his improved plough and his mastery of perpetual motion
Letter from Robert Dawson to Sir Joseph Banks about his improved plough and his mastery of perpetual motion
Letter from Robert Dawson about his use of perpetual motion
Letter from Robert Dawson about his use of perpetual motion
Letter from Francis Dubourdier about his method of obtaining perpetual motion
Letter from Francis Dubourdier about his method of obtaining perpetual motion
Letter from J W Barnard about perpetual motion
Letter from J W Barnard about perpetual motion
Letter from Joseph Driver about perpetual motion,with a note of the Society's decision
Letter from Joseph Driver about perpetual motion,with a note of the Society's decision
Letter from Samuel Evans about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from Samuel Evans about perpetual motion
Letter from De Manger in French on perpetual motion
Letter from De Manger in French on perpetual motion
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from John Lewis Tesch about his machine of perpetual motion
Letter from John Lewis Tesch about his machine of perpetual motion
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from Johann Ludwig in German about his discovery of perpetual motion
Letter from N W Kool about perpetual motion machine
Letter from N W Kool about perpetual motion machine
Letter from J Atkinson about his method of securing perpetual motion
Letter from J Atkinson about his method of securing perpetual motion
Letter from J N Morgan about perpetual motion machine with drawings
Letter from J N Morgan about perpetual motion machine with drawings
Letter from Joseph Smith about his machine of perpetual motion
Letter from Joseph Smith about his machine of perpetual motion
Letter from William Eustace about his perpetual motion machine
Letter from William Eustace about his perpetual motion machine
Letter from John Ashfold about his discovery of perpetual motion
Letter from John Ashfold about his discovery of perpetual motion